问题:如图5—7,用长为2的绳子一端系着一个质量为m的小球,另二端固定在0点,拉小球到A点,此时绳偏离竖直方向0角,空气阻力不计,松手后小球经过最低点时速度为( )
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问题:1903年研制飞机并试飞成功的人是(??)A.爱迪生 B.赫兹 C.莱特兄弟 D.马可尼
问题:下列语句中,没有错别字的一项是( )A.这份处理贪官的文件措词严厉,被印发传达给各级干部,以敬效尤。 B.由于患者自我参予镇痛,便能积极主动地加快康复速度,减轻心理压力。 C.江湖险恶,人生路上,陷井重重,千万不可掉以轻心,马马虎虎。 D.经过迭次会商,他们终于达成了一致意见,以前的争吵自然烟消云散了。
问题:John was_______he lay down for an hour before dinner.A.so tired as B.so tired that C.too tired that D.too tired so
问题:自从有了文学史以来,散文就好像是受到了歧视。一般人谈论起文学类别来,也往往只谈诗歌、小说、戏剧这“老三样”。即使谈到散文,也令人有“敬陪末座”之感。 这是非常不公平的,然而有其原因。 一般讲刭散文的应用,不外抒情与叙事两端。抒情接近诗歌,而叙事则邻近小说。散文于是就成了动物中的蝙蝠,亦鸟亦兽,非鸟非兽。在文学大家庭中,仿佛成了童养媳,难乎其为文矣。 不管是抒情,还是叙事,散文的真精神在于真实。抒情要真挚动人而又不弄玄虚;叙事不容虚构而又要有文采,有神韵。可是有一些人往往是为了消遣而读书。文学作品真实与否,在所不计。即使是胡编乱侃,只要情节动人,能触动他们灵魂深处的某一个并不高明的部位,使他们能够得到一点也并不高明的快感,不用费脑筋,而又能获得他们认为的精神享受,在工作之余,在飞机上,在火车中,一卷在手,其乐融融,阅毕丢掉,四大皆空。 散文担当不了这个差使,于是受到歧视。 倘若把文学分为阳春白雪与下里巴人的话,散文接近阳春白雪。真要欣赏散文,需要一定的基础,一定的艺术修养。虽然用不着焚香静坐,也要有一定的环境。车上、机上、厕上,不是适宜的环境。 你是不是想把散文重新塞进象牙之塔,使它成为小摆设,脱离广大的群众呢?敬谨答日:否。我只是想说,文学作品都要能给读者一点美感享受,否则文学作品就会失去它的社会意义。但是,美感享受在层次上是不尽相同的。散文给予的美感享受应该说是比较高级的美感享受,是真正的美感享受。它能提高人的精神境界,洗涤人的灵魂。像古希腊的悲剧,它能使人“净化”,但这是一种性质完全不同的净化。 写到这里,我必须谈一谈一个对散文来说是非常重要的问题:身边琐事问题。在中国文学史上,一直到近现代,最能感动人的散文往往写的都是身边琐事。即以本书而论,入选的中国散文中有《陈情表》、《兰亭集序》、《桃花源记》、《别赋》、《三峡》、《春夜宴从弟桃园序》、《祭十二郎文》、《陋室铭》、《钴姆潭西小丘记》、《醉翁亭记》、《秋声赋》、《前赤壁赋》、《黄州快哉亭记》等等宋以前的散文名篇,哪一篇不是真挚动人,感人肺腑?又哪一篇写的不是身边琐事或个人的一点即兴的感触?我们只能得到这样的一个结论:只有真实地写真实的身边琐事,才能真正拨动千千万万平常人的心弦,才能净化他们的灵魂。宇宙大事,世界大事,国家大事当然能震撼人心,然而写这些东西,如果掌握不好,往往容易流于假、大、空、废“四话”。四话一出。真情必隐,又焉能期望这样的文章能感动人呢?文章第七段,作者认为“散文给予的美感享受应该说是比较高级的美感享受”的原因是什么?(6分)
问题:下列氮肥中含氮量最高的是
问题:在FeBr3催化作用下,苯与溴发生反应,其反应类型为__________。
问题:Our eating habits are very important for good health and a strong body.There are times when?most of us would rather eat sweets and ice-cream than meat and rice.Sweets and ice-cream are not?bad if we eat them at the end of a meal.If we eat them before a meal,they may take away our appe-tite(食欲)~It is important for us to eat our meals at the same time each day.When we feel hungry,it is a sign that our body needs food.When we feel angry or excited,we may not want to eat.A long time ago,in England,some judges used to decide whether a man was telling the truth by giving him some dry bread.If the man could not eat the bread,it showed that he was telling lies.Although this seems very strange and rather foolish,it is indeed a very good way of finding out the fact.A man who is worrying about something has difficulty in eating anything dry.Because he is worrying,he loses his appetite and does not want to eat.It is good to eat sweets and ice-cream__________.A.when we are hungry B.when we want to C.after the meal D.before the meal
问题:①这是计算机运用的又一方面②在防御系统中,利用计算机将各国的飞行器种类、性能及兵力部署情况存放在计算机中③如遭到攻击,也可以按事先的防御方案及时提供给指挥员,以便迅速作出决策④一旦需要时,可以从计算机中取出来,用直观的图形,通过屏幕显示 调整后的序号为:
问题:Generations of Americans have been brought up to believe that a good breakfast is one life’s essentials.Eating breakfast at the start of the day,we have all been told,and told again,is as necessary as putting gasoline in the family car before starting a trip. But for many people the thought of food first thing in the morning is by no means a pleasure.So despite all the efforts,they still take no breakfast.Between 1977 and 1983,the latest year for which figures are available,the number of people who didn’t have breakfast,increased by 33 percent. For those who feel pain of guilt about not eating breakfast,however,there is some good news.Several studies in the last few years indicate that,for adults especially,there may be nothing wrong with omitting breakfast.“Going without breakfast does not affect performance,”said Arrold E.Bender,former professor of the nutrition at Queen Elizabeth College in London,“nor does giving people breakfast improve performance.” Scientific evidence linking breakfast to better health or better performance is surprisingly inadequate,and most of the recent work involves children,not adults,“The literature”,says one researcher,Dr.Erresto at the University of Texas,“is poor”. The latest year for which figures could be obtained is_______.A.the year the author wrote the article B.1977 C.any year between 1997 and 1983 D.1983
问题:通读下面的短文,掌握其大意。从每小题的四个选项中选出可填入相应空白处的最佳选择,并把它前面的大写字母填入左边括号里。 Mr.Jones woke early one morning,before the sun had risen.It was a beautiful morning,_21_he went to the window and looked out.He was_22_to see a neatly-dressed and mid-aged professor,who_23_in the university just up the road from Mr.Jones‘house,coming the direction of the town.He had grey hair thick glasses,and was_24 an umbrella,a morning newspaper and a bag.Mr.Jones thought that he must have_25_by the night train_26_taking a taxi. Mr.Jones had a big tree in his garden,and the children had tied a long_27_to one of the branches,so that they could swing on it. Mr.Jones saw the professor_28_when he saw the rope and looked carefully up and down the roaD.When he saw that there was_29_in sight,he stepped into the garden(there was no fence),put his umbrella,newspaper,bag and hat nearly on the grass and_30_the rope.He pulled it_31_to see whether it was strong enough to take his weight,then ran as fast as he could and swung into the_32_on the end of the rope,his grey hair blowing all around_33_._34_he swung,sometimes taking a few more_35_steps on the grass when the rope began to swing too slowly for him. At last the professor stopped,straightened his tie,combed his hair carefully,put on his hat,picked up his umbrella,newspaper and bag,and continued on his way to the university,looking as quiet and correct and respectable as one would expect a professor to be. ()A.hands B.his shoulders C.his face D.his neck
问题:According to the passage,coins once had real value as currency because they______.A.represented a great improvement over barter B.permitted easy transportation of wealth C.were made of precious metals D.could become collector’s items
问题:Why do you insist on________ A.this to be done B.this done C.this being done D.this is done
问题:Eleanor Roosevelt was the wife of America′s 32nd president,Franklin Roosevelt.She helped her husband in?many ways during his long(21)life.She also became one of the most(22)women in America.She fought for?equal rights for all people. Eleanor was born in New York City in 1884.Her family had great wealth.But Eleanor did not have a happy(23).Her parents died when she was very young.She was raised by her grandmother.Eleanor(24)that as a?child,her greatest happiness came from helping others. tn the early 1900s,many people were worried about the problems of(25)people who came to America in(26)of a better life.Eleanor could not(27)how people lived in such poor conditions while she and some others?had so much(28). After she finished school,Eleanor began(29)children to read and write in one of the poorest areas of New?York City.She also looked into(30)where workers were said to be badly(31).She saw little children of four?and five years old working until they(32)to the floor.She became involved(参与)with other women who(33)the same ideas about improving social conditions. Franklin Roosevelt began(34)Eleanor when he was in New York.They got(35)in 1905.In the next eleven?years,they had six children.The Roosevelts moved to Washington D.C.in 1913.第(30)题选A.hospitals B.factories C.schools D.armies
问题:下列地理现象中,由地球自转产生的是(??)A.昼夜更替现象 B.四季变化 C.昼夜长短的变化 D.正午太阳高度的季节变化
问题:Our eating habits are very important for good health and a strong body.There are times when?most of us would rather eat sweets and ice-cream than meat and rice.Sweets and ice-cream are not?bad if we eat them at the end of a meal.If we eat them before a meal,they may take away our appe-tite(食欲)~It is important for us to eat our meals at the same time each day.When we feel hungry,it is a sign that our body needs food.When we feel angry or excited,we may not want to eat.A long time ago,in England,some judges used to decide whether a man was telling the truth by giving him some dry bread.If the man could not eat the bread,it showed that he was telling lies.Although this seems very strange and rather foolish,it is indeed a very good way of finding out the fact.A man who is worrying about something has difficulty in eating anything dry.Because he is worrying,he loses his appetite and does not want to eat.A man who is worrying__________.A.has a better appetite B.likes to tell lies C.likes to eat ice-cream D.has a poor appetite
问题:提示:Tom和Lester两人正在聊天,彼此问对方上一个周末是怎样度过的。Tom说他上星期六晚上同Si咖一道吃了饭,而Lester说他星期l3去电影院看了一场电影。 Tom:51 Lester:Not bad.What about you? Tom:Not bad,either.What did you do last weekend? Lester:Well,52 Tom:Oh,53 Lester:The Lion King. Tom:Oh,really?54 Lester:Yes,it was goo
问题:George and Margaret and their children?21?at 140 Davis Street,22?the street from a small park.Their house is just off the main road.George usually goes to work by bus,but sometimes he goes?23?his car.The children usually go to school by bus. The Glenns′house is?24?hidden among the trees.It has small bushes(灌木)planted around it.There is a fence?25 it and the house next door.It is a two-storey house,26 the living room,dining room andkitchen(厨房)on the first floor,and the bedrooms and bathroom on the second floor. The Glenns spend a lot of time at home.27 now they are at dinner.Conversation(谈话)at the Glenns′house is usually lively at meal time.The children are discussing trips they would like to take.Susan,who has never?28?on a plane,says,"I′d like to?29 a plane to California."Henry,who is elder,thinks it would be fun to be on a?30,heading for adventure(冒险)in Africa.Teddy,the youngest child,says,"I want to go around the world on a train."His elder brother and sister are still trying to?31 to him why this is not possible?32?their mother says,"Children,you′ve spent too much time at the table.Henry and Susan,go and?33 your homework.Teddy,it′s time you were in bed." Soon there is silence throughout the?34.Teddy is in bed,Susan and Henry are in their rooms studying,and Mr.and Mrs.Glenns are in their living room,35George is sitting in his favorite(最喜欢的)chair,reading the paper and Margaret is sitting on the sofa,doing some sewing.第29题答案是查看材料A.ride B.fly C.take D.travel
问题:[0202]设甲:x>3,乙:x>5,则()A.甲是乙的充分条件,但不是乙的必要条件 B.甲是乙的必要条件,但不是乙的充分条件 C.甲是乙的充分必要条件 D.甲不是乙的充分条件,也不是乙的必要条件
问题:I have been hearing-impaired in my life since I was five years old.Putting on hearing aids in the?morning has been just as(21)as brushing my teeth.However I never believed that it should limit?my(22)in any way. During my 17 years I have met many people who don′t know about(23)disabilities and deal?with(24)by stereotyping(对某人有固定的看法)inc.My teacher would not let me sit past the?second row because they(25)I would not be able to hear.People tend to speak(26)than nor-mal when they see my thick plastic hearing aids in my ears.However,my hearing disability has made?me a stronger person.Because I wear hearing aids I have to prove that I am not(27)or mentally?limited.I have to work harder and earn top grades in school to earn the(28)of my teachers.In?shorts,I′ve had to run faster,catch better and score more points to prove I am not physically(29). I don′t fit in with people who are deaf and(30)as a way to communicate.I consider myself no?difference from anyone else.And I am not"half deaf"with my hearing aids(31);I can hear just?as well as anyone else. In my struggle to prove I am(32)to my non-disabled peers(同龄人)I have made myself?better than the average teenager.I won the all-star(33)on my softball team.I have made myself a(34)through my published poetry and articles. Instead of giving up,I have proven that I can do anything I want.I truly believe I would not be?the(35)person I am today if I did not have a hearing disability.第(28)题选A.guide B.pity C.respect D.praise